foreign policy is bipartisan and we see it as this -- these lines running from 1898 -- you can say 1846 with mexico -- but we're tracing from 1899 up to iraq and afghanistan and yemen, and to the current administration. >> a lot like great historian williams who argues empire is a way of life. you call your book "untold history of the united states now now and in some ways williams -- >> we're following that. that's been on -- standing on on the showereds of a lot of great historian. this is not really untold to university audiences. it's untold in the public schools and untold to the popular u.s.a. audience. some people get their history from television and movies other than oliver's, and we're trying to challenge they that americans don't know much history. the national record card says u.s. high school seniors are worse in understanding history than math and science. they always bemoan the fact they're so week in math and science but only 12% of high school seniors showed profifth si in u.s. history. 12%. the amazing thing is that the report also said that only 2% actually could expl